. The Canadian field-naturalist. Natural history; Sciences naturelles. 2006 Ncjnis 481 Colin Lake. FiCiURi-: I. Bathynictric map of Colin Lake, with Dccpwatcr Sculpin capture localities indicated. Depths given in metres. (Esox Indus), Lake Trout (Salveliniis nanuiyciish), and Longnose Sucker {Catostomiis catostoinus). Lake Whitefish, Cisco, and Longnose Suckers were the most common species. All three specimens of Deepwater Sculpin are gravid females, ranging from 62-74 mm SL (Standard Length), with four prominent, large, and straight preopercular spines, a large gap between the dorsal fins, an
. The Canadian field-naturalist. Natural history; Sciences naturelles. 2006 Ncjnis 481 Colin Lake. FiCiURi-: I. Bathynictric map of Colin Lake, with Dccpwatcr Sculpin capture localities indicated. Depths given in metres. (Esox Indus), Lake Trout (Salveliniis nanuiyciish), and Longnose Sucker {Catostomiis catostoinus). Lake Whitefish, Cisco, and Longnose Suckers were the most common species. All three specimens of Deepwater Sculpin are gravid females, ranging from 62-74 mm SL (Standard Length), with four prominent, large, and straight preopercular spines, a large gap between the dorsal fins, and the gill covers free at the isthmus. Meristic counts of these specimens are consistent with data presented by McAl- lister (1961) for adjacent populations in Saskatchewan and the Northwest Territories. Dorsal fin spines were (number of specimens in parentheses) 7(2) or 8(1); dorsal fin rays 14( 1), 16( I), or ! 7( 1); anal fin rays 14( 1), 15(1), or 17(1); pelvic rays 3(6); pectoral rays 16(2) or 17(4). Two of the three had an incomplete lateral line (ending under the last dorsal fin ray) with 32 pores; in the remaining specimen the lateral line continued posteriad to the caudal peduncle and had 36 pores. These specimens represent the first record of Deep- water Sculpin from northern Alberta, and only the sec- ond record for the province (Roberts 1988). The only other known population in Alberta occupies Upper Waterton Lake (49°02'N, 113°54'W) on the Alberta/ Montana border (McAllister and Ward 1972) (Figure 2). Nelson and Paetz (1992) suggested the likely pres- ence of Deepwater Sculpin in northeastern Alberta, given the proximity of populations in adjacent Saskat- chewan and the Northwest Territories. The closest pop- ulations supported by voucher specimens iu-e Great Slave Lake. Northwest Territories (-300 km NNW) and Wollaston (400 km SE) and Reindeer Lakes (520 km SE), Saskatchewan (COSEWIC 2006*). Records from Lake Athabasca in northwestern Saskatchewan (-100 km ESE,
Size: 1881px × 1328px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, books, booksubjectnaturalhistory
